Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,438/900,000,000,162
- The integer number above the bar is called numerator: 779,422,863,438
- The integer number below the bar is called denominator: 900,000,000,162
- The fraction bar means that the numerator is divided by the denominator.
- To get the fraction's value divide the numerator by the denominator:
The value = 779,422,863,438 ÷ 900,000,000,162
To reduce a fraction to the lowest terms equivalent: divide the numerator and denominator by their greatest common factor, GCF
To calculate the greatest common factor, GCF:
- 1. Factor the numerator and the denominator (into prime factors), build their prime factorizations.
- 2. Multiply all their common prime factors, taken by the lowest exponents.
1. Factor the numerator and the denominator:
To factor a number (into prime factors) - or, in other words, to break it down to prime factors - or, in other words, to build its prime factorization: find the prime numbers that multiply together to get that number.
The prime factorizations:
Written with exponents:
779,422,863,438 = 2 × 3 × 3 × 1,381 × 31,355,011 = 2 × 32 × 1,381 × 31,355,011
779,422,863,438 is a composite number.
Written with exponents:
900,000,000,162 = 2 × 3 × 3 × 881 × 56,753,689 = 2 × 32 × 881 × 56,753,689
900,000,000,162 is a composite number.
779,422,863,438/900,000,000,162 =
(779,422,863,438 ÷ 18) / (900,000,000,162 ÷ 18) =
43,301,270,191/50,000,000,009
Yet another method to reduce the fraction
To reduce a fraction without calculating the GCF: factor its numerator and denominator, then all the common prime factors are easily identified and crossed out.
779,422,863,438/900,000,000,162 =
(2 × 32 × 1,381 × 31,355,011)/(2 × 32 × 881 × 56,753,689) =
((2 × 32 × 1,381 × 31,355,011) ÷ (2 × 32)) / ((2 × 32 × 881 × 56,753,689) ÷ (2 × 32)) =
(1,381 × 31,355,011)/(881 × 56,753,689) =
43,301,270,191/50,000,000,009
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
43,301,270,191/50,000,000,009 =
43,301,270,191 ÷ 50,000,000,009 =
0.866025403664 ≈
0.87